I’ve made an account on The Interactive Fiction Database and am in the process of adding my Twine games. So far the only thing I’ve put on there is Draw Nine, but if you visit my profile you’ll also see Cragne Manor alongside it: the game page already listed me as a contributor at the point I signed up.
I aim eventually to have all my significant works of interactive fiction on there (ie. everything but the Twine for Beginners example pieces and some of the April Fools jokes), but if you’ve got any particular favourites then let me know in the comments and I’ll aim to get those in there first.
Alternatively, IFDB follows a Wikipedia sort of format where anyone can edit it, so if there’s anything you really want to see in there then you can add it yourself!